cURL to Fetch Converter — Convert curl Commands to JavaScript Instantly

cURL to Fetch Converter is a free, browser-based developer tool that transforms curl commands into clean JavaScript code. Paste a curl command, pick your target format — fetch, axios, or XMLHttpRequest — and get ready-to-use code in seconds.

The Problem

Every API doc ships with curl examples. Stripe, Twilio, GitHub, OpenAI — they all default to curl for quick-start snippets. But most frontend and full-stack developers don't write curl in production. They write JavaScript.

The translation from curl to fetch is deceptively tricky:

• Headers need to move from -H flags into a Headers object or inline config
• POST bodies (-d or --data) need to land in the right property (body for fetch, data for axios)
• Auth tokens (-u or --header "Authorization: Bearer ...") need correct placement
• Method inference — curl uses GET by default but switches to POST when -d is present; developers often forget this
• Content-Type handling differs between fetch and axios — one sets it automatically for JSON, the other doesn't

Manually rewriting curl commands is slow, error-prone, and repetitive. One missed header or wrong property name means a broken request and 10 minutes of debugging.

How It Works

1. Paste Your curl Command

Drop any curl command into the editor — from API documentation, Postman exports, browser DevTools "Copy as cURL", or your terminal history. The tool parses it instantly.

2. Choose Your Output Format

Pick the JavaScript format that matches your codebase:

• fetch — the browser-native API, zero dependencies
• axios — the most popular HTTP client for Node.js and browsers
• XMLHttpRequest — legacy format for older codebases

3. Get Clean, Copy-Ready Code

The converter generates properly formatted JavaScript with:

• Correct HTTP method (GET, POST, PUT, PATCH, DELETE)
• Headers extracted and structured
• Request body placed in the right property
• Authentication tokens preserved
• Content-Type headers handled correctly per target format

4. Copy and Ship

One click copies the generated code to your clipboard. Paste it into your project and you're done — no manual translation, no guessing.

Key Features

• Three output formats — fetch, axios, and XMLHttpRequest from a single curl input
• Smart parsing — handles -H, -d, --data, -X, -u, --header, --request, and more
• Browser-only — no backend, no API calls, your data never leaves your machine
• Instant conversion — paste and get results in real time, no submit button needed
• Copy to clipboard — one-click copy for the generated code
• No sign-up — open the tool, use it, done

Who It's For

• Frontend developers converting API doc examples into working fetch calls
• Full-stack developers moving between terminal testing and application code
• API consumers who get curl snippets from docs and need them in JavaScript
• Teams migrating from XMLHttpRequest to fetch or axios

Tech Stack

• Next.js 14 with App Router
• TypeScript for type-safe parsing logic
• Tailwind CSS for responsive UI
• 100% client-side — no server, no database, no API keys

Try It

Open curl-to-fetch.tools.jagodana.com, paste a curl command, and get JavaScript code instantly. Free, no account required.